export default {
	namespaced: true,

	state: () => ({

		//购物车的数组，用来存储每个信息
		// {goods_id,goods_name,goods_price,goods_count,goods_small_logo,goods_state}
		// cart: []
		cart: JSON.parse(uni.getStorageSync('cart') || '[]')
	}),

	mutations: {
		addToCart(state, goods) {
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)

			if (!findResult) {
				state.cart.push(goods)
			} else {
				findResult.goods_count++
			}

			// console.log(state.cart);
			this.commit('m_cart/saveToStorage')
		},

		saveToStorage(state) {
			uni.setStorageSync('cart', JSON.stringify(state.cart))
		},

		//更新购物车中商品的勾选状态
		updateGoodsState(state, goods) {
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)

			if (findResult) {
				findResult.goods_state = goods.goods_state
				this.commit('m_cart/saveToStorage')
			}
		},
		//更新商品的数量
		updateGoodsCount(state, goods) {
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)

			if (findResult) {
				findResult.goods_count = goods.goods_count
				this.commit('m_cart/saveToStorage')
			}
		},
		//删除商品信息
		removeGoodsById(state, goods_id) {
			// console.log('Before removal:', state.cart);
			state.cart = state.cart.filter(x => x.goods_id !== goods_id);
			// console.log('After removal:', state.cart);
			this.commit('m_cart/saveToStorage');
		},

		updateAllGoodsState(state, newState) {
			state.cart.forEach(x => x.goods_state = newState)

			this.commit('m_cart/saveToStorage')
		}
	},

	getters: {
		//所有购物车中的总数量
		total(state) {
			// let c = 0
			// state.cart.forEach(x => c += x.goods_count)
			// return c

			return state.cart.reduce((total, item) => total += item.goods_count, 0)
		},


		//购物车中已勾选额商品的总数量
		checkCount(state) {
			return state.cart.filter(x => x.goods_state).reduce((total, item) => total += item.goods_count, 0)
		},

		//已勾选产品的总价格
		checkGoodsAmount(state) {
			return state.cart.filter(x => x.goods_state).reduce((total, item) => total += item.goods_count * item
				.goods_price, 0).toFixed(2)
		},

	}
}